baber/WOPTO huggingface dataset:
Patent GB-907387-A (GB)
Title: Electrical lead screw
Inventor: SHEPHERDSON MICHAEL
IPC: B23Q15/00
Filed: 1958-12-05
Abstract: 907,387. Electric correspondence control systems. SPERRY GYROSCOPE CO. Ltd. Dec. 4, 1959 [Dec. 5, 1958], No. 39230/58. Class 40 (1). [Also in Groups IX and XXII] An electrical lead screw for cutting screwthreads on a lathe comprises a pick-off device having one member 6a (Fig. 1) attached to the lathe saddle 2 and the other member 6b moved linearly by rotation of the headstock 7, the error signal in the pick-off being used to adjust the position of the saddle so that accurate proportionality is maintained between the linear movement of the saddle 2 and rotational movement of the headstock 7. The pick-off member 6b is carried by a thin metal tape 8 paid off from a drum 9 geared to the headstock 7, the free end of the tape 8 being attached to a spring 12 to keep it taut. The pick-off signal is fed through amplifiers 14, 17, a phase-sensitive rectifier 15 and a low-pass filter 16, to an actuator 18 controlling the hydraulic motor 1 driving the saddle 2. In one embodiment (Fig. 4), the spring 12 is replaced by a torque motor 67 coupled via clutches 64, 65 and gear-boxes 63, 66 to the headstock driving spindle 62, and the drum 20 is arranged to travel along a bar as the tape 8 is paid off to ensure that its position is maintained constant. The support 69 to which the tape is secured is associated with a locking device 71 to allow manual control of the lathe saddle, and is also supplied with microswitches 73, 74 operated by the support 69 to stop the lathe if the tape tension does not remain constant. The extent of travel of the saddle is determined by limit switches 90-93. The hydraulic motor 75 driving the saddle is fed from amplifier 77 whose input is the positional error signal from the pick-off 68, a headstock speed signal from tachogenerator 79, and an antihunting signal from tachogenerator 78. Specifications 816,714, 842,376 and 880,763 are referred to.
Patent GB-335845-A (GB)
Title: Foldable suspension device for advertisement placards and the like, especially in vehicles
IPC: G09F7/20
Filed: 1929-12-24
Abstract: 335,845. M³cke, M. Dec. 24, 1929. No Patent granted (Sealing fee not paid). Pivoting adjustments. - A binge is locked in the straightened position by means of a U-shaped clip d pivoted at e to one of the hinge members. The front wall of the clip is slotted at the height of the hinge pin so that it may be used as shown to hold the lower linge member in a horizontal position.
Patent GB-1261563-A (GB)
Title: Method and apparatus for manufacturing false twisted threads from thermoplastic synthetic resin tapes
IPC: D01D5/42
Filed: 1969-08-07
Abstract: 1,261,563. Spinning yarns; twist-tubes. MITSUBISHI RAYON CO. Ltd. 7 Aug., 1969 [14 Aug., 1968], No. 39524/69. Headings D1D, DIF and D1W. False-twisted, perhaps bulky and/or interlaced yarn, for knitting, weaving, netting, cordage, is made by feeding one or more, similar or different, composite or mixed thermoplastic synthetic resin tapes into and through a cylindrical thread forming device into which a high pressure fluid, e.g. air, steam or superheated steam, at a temperature not lower than the plasticising temperature of the resin, is jetted eccentrically so that an eddy stream thereof effects a twisting action on the tapes which are thereby converted to a cylindrical, bundled yarn form and, simultaneously therewith the yarn is thermoset. The tapes may have been previously split or shattered into filaments or freshly formed and highly oriented by stretching so that they split under the action of the fluid stream. The resin may be polyolefin such as polyethylene or polypropylene, polyvinyl alcohol, polyvinyl chloride, polyacrylonitrile, polyamide, polyester or mixtures thereof, to which colouring matter, foaming agent, adhesives, and/or plasticisers may be added. The thread-forming device comprises a forming tube 32, a tapered passage 30, a fluid passage 35, and one or more fluid inlet conduits as at 31 (so directed as to produce a spiral of fluid in the tube) and, optionally, a longitudinally displaced inlet as at 31'. Another embodiment, Fig. 9, includes a supplementary heater 33 and a spiral fluid passage 36 formed in the passage 35 to reinforce the eddy stream formation. The outer surface of the resultant yarn may be uniformly fused and/or formed with rugged patterns by passage of the yarn through a heated die and/or embossing rollers.
Patent GB-861399-A (GB)
Title: Hydraulic rams
Inventor: NORTON HENRY
IPC: B30B15/04
Filed: 1958-12-09
Abstract: 861,399. Hydraulic apparatus. NORTON TOOL CO. Ltd. Dec. 3, 1959 [Dec. 9, 1958], No. 39730/58. Class 69 (2). An hydraulic ram for a press or machine tool comprises a member 14 movable in a fixed guide sleeve 10 which is slit longitudinally to provide two cheeks 20 with flat facing surfaces 19 between which a flat-sided spacer 22 is clamped. The member 14, which may be a piston or, as shown, a cylinder, is movable on a fixed inner member 15 by oil under pressure supplied through bores 16. The member has a groove 17 engaged by an inner part 21 of the spacer which is adjustable radially of the member by screws in an outer part 22 clamped between the cheeks 20 by bolts 24. Wear on the guide sleeve or member 14 is taken up by the removal of shims, by reducing the thickness of the spacer, or by fitting a thinner spacer. The stroke of the member is adjustable by a collar on a threaded portion of the member engaging a stop surface on the sleeve and an adjustable stop. Alternatively, adjustable stop collars may be provided on threaded portions at each end of the member 14. The guide sleeve may be formed with two smaller bores, one on each side of, and parallel to, the member 14, each bore receiving a longitudinally-movable member or a guide rod on a movable platen of the machine to prevent tilting thereof. Each bore is slit to receive a spacer.
Patent GB-1501677-A (GB)
Title: Fluent solid supply apparatus
IPC: B65G53/36
Filed: 1975-09-29
Abstract: 1501677 Pneumatic conveyers AIR INDUSTRIE 29 Sept 1975 [9 Oct 1974] 39848/75 Heading B8A [Also in Division F2] Fluent material is pneumatically conveyed from a container 4 in which the level of fluidized material is maintained constant by a supply from a bin 1 containing fluidized material which passes through an air lock 10 situated beneath the level of material in the bin 1 but at the desired level in the container 4. As shown the air lock comprises a pair of discs 12, 13 which are reciprocated in a channel 16. Alternatively, a rotary wheel (17, Fig. 2) may comprise the air lock. In a third embodiment (Fig. 3), an inclined tube (20) interconnects the bin 1 and the container 4 and is provided with dapper valves at its ends, the valves being alternately opened and closed. Air enters the container via an inlet 7 and entrains material along a guide tube 8 into a conduit 9.
Patent GB-1311407-A (GB)
Title: Film camera
IPC: G03B19/04
Filed: 1971-08-25
Abstract: 1311407 Film camera ERNST LEITZ GmbH 25 Aug 1971 [23 Oct 1970] 39873/71 Heading G2A In a compact film camera having a moving slit shutter 9 and a space B for housing a film spool, the mechanism for driving the shutter is located between them and the shutter moves perpendicularly to the direction of film advance. As shown focal plane shutter blinds 9 are powered by shaft 9a carrying cams 10 and having followers 11. Shutter speed is adjusted by an external control connected to cam 12.
Patent GB-1516699-A (GB)
Title: Regulated voltage generators
IPC: H03K19/003
Filed: 1975-09-30
Abstract: 1516699 Automatic control of delay; transistor pulse circuits INTERNATIONAL BUSINESS MACHINES CORP 30 Sept 1975 [19 Nov 1974] 39874/75 Headings H3A and H3T [Also in Division H2] A circuit for regulating the load gate voltage of a FET circuit so as to adjust the phase delay through the circuit to equal a reference time comprises: a timing generator 100, Fig. 1, driven by an external clock to generate a reference time signal A; delay means 120 in a FET integrated circuit chip for producing a signal B dependent on the delay of an operational circuit on the chip; a comparator 100 receiving the signals A, B for producing an output G which varies according to the delay time relative to the reference time: and means 140 for producing in dependance on the output G, a load gate voltage V LG  for adjusting the circuit delay to equal the reference time. As described with reference to Fig. I, if the delay of circuit 120 is less than the reference time, pulses in signals A, B overlap, and if it is greater they do not. Before an A pulse is generated, capacitor 132 is initially charged by a pulse C which turns on FET 131. A pulse A then turns on FET 133, and if a delayed pulse via delay 120 turns on FET 134 before pulse A terminates then capacitor 132 is discharged. If the delay is longer than the duration of pulse A, pulses A and B do not overlap and capacitor 132 remains charged, since 133 and 134 are not on together. The charge on capacitor 132 is then sampled by a pulse E and transferred to capacitor 136. The resulting output signal at G is fed to a voltage doubler 140 where it is smoothed to provide the required control signal V LG  which adjusts the phase delay. A start up circuit 160 provides an initial control signal V LG  until comparator 130 commences to produce a useful output. In an alternative circuit, Fig. 10, the delay means is incorporated into an oscillator 174 whose frequency depends on the delay. The reference time period is produced by divider 170 triggered by the clock signal, and the number of cycles of oscillation occurring within the reference time period are counted by counter 173. Selected output stages of the counter are coupled to logic circuit 175, 176 to produce at 32 a "0" or "1" level signal depending on whether the count is above or below a predetermined count (e.g. 32 as shown). The output at 32 is fed to a voltage doubler stage as before.
Patent GB-1480037-A (GB)
Title: Rotor for rotary internal-combustion engines
IPC: F01C21/08
Filed: 1975-10-02
Abstract: 1480037 Rotary positive-displacement fluidmachines FORD MOTOR CO Ltd 2 Oct 1975 [3 Oct 1974] 40259/75 Heading F1F To facilitate manufacture a rotor for an I.C. engine, which may be of the Wankel type, has interfitting portions 10, 11 held together by fused metal e.g. a copper alloy, between cylindrical surfaces 15a, 15b and transverse flat surfaces 17a, 17b, 31, 32. The portions 10, 11 may be made of nodular cast-iron.
Patent GB-1203085-A (GB)
Title: Improvements in or relating to the calcining of fine and flotation ores
IPC: C22B1/10
Filed: 1967-09-04
Abstract: 1,203,085. Roasting sulphide ores. SUDCHEMIE A.G. 4 Sept., 1967 [14 Oct., 1966], No. 40311/67. Heading CIA. [Also in Division F4] In a process for calcining flue and flotation sulphide ores with a grain size of less than 1 mm. wherein the material is treated in a fluidized bed furnace 1, the temperature in the upper part of the furnace is regulated by means of two sets of cooling tubes 5 and 7 located respectively in the fluidized bed and in the zone above the fluidized bed. Feed material enters the furnace at 2 and air enters below the grate 4 at 3. The calcining gases on leaving the furnace at 8 pass into a boiler system comprising tube sections 9, 10, 11 wherein some of the calcined material carried by the gases is deposited and then removed through outlets 13. The gases leave the boiler system at 12 to pass into an electrostatic gas cleaner.
Patent GB-1433715-A (GB)
Title: Process for the preparation of isoprene
IPC: C07C1/247
Filed: 1974-09-18
Abstract: 1433715 Isoprene BAYER AG 18 Sept 1974 [22 Sept 1973] 40642/74 Heading C5E [Also in Division C2] In the preparation of isoprene by (1) reacting isobutene with formaldehyde to form 4,4-dimethyl-m-dioxane, and (2) decomposing the dioxane to form isoprene, the steps of (3) distilling the formaldehyde-containing aqueous phase resulting from (1) and/or (2) optionally together with any other formaldehyde-containing aqueous solution, to separate the high boiling constituents as a sump product, (4) extracting the distillate with a C 4  hydrocarbon stream, the C 4  hydrocarbons leaving the extraction being fed to (1), (5) adding alkali to the extracted aqueous formaldehyde solution and (6) subjecting it to rectification, formaldehyde being obtained as head product and aqueous effluent substantially free from formaldehyde being discharged as sump product. The extracted formaldehyde solution may be adjusted to a pH of 4 to 8 by the addition of alkali such as NaOH, KOH or Ca(OH) 2  in amount 50-1000 p.p.m. The formaldehyde recovered in the form of 30-40 wt. per cent formalin may be recycled to (1).
Patent GB-923175-A (GB)
Title: Improvements in picture projection systems
IPC: G03B21/60
Filed: 1960-11-29
Abstract: 923,175. Panoramic projection. J. HOURDIAUX. Nov. 29, 1960 [Dec. 9, 1959], No. 41017/60. Class 97 (1). A picture projection system comprises a curved screen having a minimum " relative depth" (f/c in Fig. 1) of 1/10 and projection apparatus comprising optical means for forming a sharp curved image coinciding substantially with the surface of the screen. The image curvature may be produced by introducing suitable aberrations into the projection lens or lenses, or by using a supplementary " bent " lens. The screen is formed of an array of juxtaposed quadrant-section rods parallel with the axis of curvature of the screen with the arcuate surface facing towards the meridian plane of a convex screen (Fig. 4) and away from the meridian plane of a concave screen (Fig. 3). Auxiliary meniscus lenses 4 are used to provide field curvature in the projected image 7.
Patent GB-1049867-A (GB)
Title: An backing plate for the cover plate of an electrical switch or other electrical accessory
Inventor: ARNOLD CHARLES LEONARD
IPC: H01H9/16
Filed: 1962-10-30
Abstract: 1,049,867. Indicators for switches. M.K. ELECTRIC Ltd. July 11, 1963 [Oct.30, 1962], No. 41020/62. Heading H2B. A switch &c. backing plate comprises an apertured plate formed with a recess 6 communicating with a deeper recess 7 which in turn extends into a part 8 projecting outwardly from the front surface of the plate. The projection 8, at least, is made of translucent material. A neon lamp 11 is accommodated in the projection, the electrical connections 12 thereto passing through a channel 9 formed in the bottom of the recess, and the bulb and connections are held in place by a cover of electrically insulating material which fits into the recess 6. The plate is made of plastics material.
Patent GB-1467239-A (GB)
Title: Tool selection structure and method of random tool selection
IPC: G05B19/18
Filed: 1974-02-28
Abstract: 1467239 Automatic control EX-CELL-O CORP 28 Feb 1974 [29 May 1973] 41029/73 Heading G3N A tool-changer employing a conveyer with toolholders for separate tools is associated with a random tool selection structure comprising a memory for storing tool code numbers, means associating each address in the memory with a tool-holder on the conveyer and means in response to a toolrequest for interrogating the memory and bringing the requested tool into an exchange position in a direction so that the distance the conveyer travels is a minimum. As shown, tools from a conveyer 130 are transferred by an exchange structure 57 to a machine tool 56. The conveyer is positioned by a drive 38 actuated over direction-determining lines 40, 42 from an auto-coincidence circuit 12. The position of the conveyer is sensed by a rotary switch 26 and fed, through an interface 24 to the circuit 12. During loading of the conveyer tool codes and corresponding tool-holder positions on the conveyer are manually set into a core memory 14 by thumbwheel logic 28. In automatic operation, a machine control unit 44 provides a tool word, for the tool to be placed into an exchange position 138, which is held in a register 20, and provides through a stroke unit 22 an indication to the circuit 12 that a new word is in register 20. The circuit 12 interrogates the memory 14 to cause a tool word, corresponding to the position of the conveyer as sensed by the switch 26, to be issued to coincidence logic 18. Lack of coincidence with the number in register 20 causes the circuit 12 to index the memory 14 until coincidence is attained. The circuit 12 then determines the required direction of travel and energizes the drive 38 accordingly. The tool number of the exchanged tool is temporarily held in a store 30 and the number of the returned tool transferred to a spindle store 32 and, subsequently, through logic 28 into the memory 14.
Patent GB-1004089-A (GB)
Title: Method and means for removing electrostatic charges from the intake gases of internal combustion engines
IPC: F02M63/00
Filed: 1961-11-17
Abstract: 1,004,089. Sparking plugs; treating charge. I. S. VIDAL. Nov. 17, 1961 [Nov. 18, 1960], No. 41234/61. Heading F1B. Sharp conductive points are provided in the cylinders or the intake conduit of an internal combustion engine for the purpose of removing electrostatic charges from the intake gases. As shown, needles 7 of different length are forced into holes in the body of a sparking plug.
Patent GB-1326836-A (GB)
Title: Process for the manufacture of plasticised melamine-formaldehyde condensates
IPC: D06N7/06
Filed: 1971-08-03
Abstract: 1326836 Laminates CIBA-GEIGY AG 3 Sept 1971 [7 Sept 1970] 41263/71 Heading B5N [Also in Division C3] A decorative laminate is prepared by impregnating an overlay paper and a decorative paper with a melamine-formaldehyde resin to which has been added during or after its preparation 1À5-7À5 wt. per cent of a sugar and at least 1À5 wt. per cent of a lactam, the two totalling 3-15 wt. per cent of the MF resin, drying the papers and pressing them with 6 sheets of kraft paper impregnated with a phenolic resin to form a laminate.
Patent GB-915398-A (GB)
Title: Bituminous binder adhesion agent
Inventor: LATHAM KENNETH GEOFFREY
IPC: C08L95/00
Filed: 1959-12-04
Abstract: Salts obtained by reacting an aliphatic amine, containing from 12 to 20 carbon atoms, with an a - or b -hydroxy fatty acid containing from 4 to 6 carbon atoms in the molecule, in particular stearine amine lactate, are used in aqueous solution or dispersion to promote adhesion between aggregate and bituminous binders.  Amines such as C14H20NH2, C18H37NH2, and those primary amines derived from natural or synthetic fatty acids are preferred.ALSO:Adhesion between a bituminous binder and an aggregate is improved by contacting the binder and/or aggregate with an acqueous solution or dispersion of a salt formed by reacting an aliphatic amine containing 12 to 20 carbon atoms in the molecule with a - or b -hydroxy fatty acid containing from 4 to 6 carbon atoms in the molecule.  Stearine amine lactate (see Group IV(b)) in solution or as a pasty solid and further activated if required by lactic acid or calcium hydroxide, is added to siliceous aggregate and 3 to 5,5% of a binder (based on the aggregate) such as cut-back bitumen, acqueous bitumen emulsion or road oil.
Patent GB-1529870-A (GB)
Title: Helicopter rotors
IPC: B64C27/33
Filed: 1975-10-13
Abstract: 1529870 Helicopter rotor blade pitch control WESTLAND AIRCRAFT Ltd 28 Sept 1976 [13 Oct 1975] 41902/75 Heading B7W A helicopter rotor comprises at least three blades 13 extending from a hub 11 attached to the top of a hollow drive shaft 22, a control column 23 which extends within the shaft without support intermediate its ends and which carries a radially extending arm 25 for each blade; each arm 25 being connected for pivotal movement about a generally vertical axis 34 to effect pitch adjustment of its respective blade via a feathering hinge, the axis 34 being located in a region in which lead/lag movements do not occur, and at least two of the arms being connected so as not to be able to move relative to each other. In the embodiment shown a semi-rigid rotor system employs a flexure member 14 between the hub and each blade having a portion 15 to allow flap movement, a portion 16 to allow flap and lead/lag movements, and a housing secured to the blade which can pivot about portion 16 on radial 18 and thrust 19 bearings to function as a feathering hinge. Arms 25 are secured to the top of the column 23, the lower end of which is connected to a pitch control actuator, and the outer ends of the arms are connected via a ball joint 30 (or other universal joint) to pitch control levers 33. Up and down movement of column 23 changes the collective pitch while tilting of the column about a virtual pivot 35 causes collective pitch changes. In a modification two pairs of interconnected arms 25 are free to move about the axis of the column 23 (Fig. 5, not shown). In a rotor arrangement employing a lead/lag hinge the axis 34 should be located inboard of that hinge.
Patent GB-1285467-A (GB)
Title: Method and apparatus for manufacturing articles from a hardening substance
IPC: B28B15/00
Filed: 1969-08-22
Abstract: 1285467 Moulding concrete tiles MACHINEFABRIEK GEB KALKMAN NV 22 Aug 1969 [22 Aug 1968] 41939/69 Heading B5A Concrete tiles are made in moulds with detachable bottom plates by placing the mould horizontally on a support, pouring concrete into the moulds and allowing the concrete to densify, placing the mould on its side, placing a plate against the side of the mould facing away from the bottom plate, pushing the moulding against this plate, tilting the mould until the said plate is horizontal and supports the concrete and removing the bottom plate and mould from the concrete block. The moulding may be moved in the mould so that the bottom plate can be slid off from the surface of the moulding for cleaning and the moulding can be provided with a washed top surface. The cleansed bottom plate can then be used to force the moulding against the plate.
Patent GB-1184668-A (GB)
Title: Improved Electromechanical Oscillator.
Inventor: CLIFFORD CECIL FRANK
IPC: H02K33/10
Filed: 1967-09-18
Abstract: 1,184,668. Electromechanical filters. HORSTMANN CLIFFORD MAGNETICS Ltd. 11 Sept., 1968 [18 Sept., 1967], No. 42320/67. Heading H3U. [Also in Divisions G3 and H2] An electromechanical oscillator which may be used in a filter comprises a pair of flexible primary reeds 11, 12 each supported at one end 13, 19, each reed having longitudinal slots 15, 16; 21, 22 and transverse slots 14, 20 to define secondary reeds 18, 24. The ends 13, 19 are clamped between a brass block 25 and two synthetic plastics end blocks 26, 27. Magnets 30, 31 are attached to the free ends of the reeds 18, 24 and co-operate with coils mounted in bores 32, 33 in the end blocks. In a modification, the secondary reeds are formed in the arms of a U-shaped nickel-iron alloy strip, the centre of which is clamped.
Patent GB-1436149-A (GB)
Title: Device for continuous ultrasonic testing of rolled strip
IPC: G01N29/26
Filed: 1973-09-10
Abstract: 1436149 Ultrasonic testing apparatus; ultrasonic probes THYSSEN NEIDERRHEIN AG HUTTEN-UND WALZWERKE 10 Sept 1973 [2 Nov 1972] 42417/73 Headings H4D and H4J A device for the continuous ultrasonic testing of rolled strip comprises a movable carriage (6) (Fig. 1, not shown) carrying ultrasonic transmitter 15 and receiver 16 mounted in chambers 14 each defined by two parallel plates 17 joined by a square U-shaped housing portion 19, the base of the housing portion 19 covering the open bottoms of both chambers and the limbs of the housing portion 19 covering the open sides of both chambers such that there is an air gap 20 between the two adjacent plates 17 which are also joined at their top edges by a rib 21 (see also, Fig. 3, not shown) the housing portion and rib being thinner than plates 17. In the embodiment, the carriage moves at right angles to the strip motion and the ultrasonic transducers are coupled to the strip by fluid supplied via pipe 23. The inner surfaces of the housing portion 19 and rib 21 are provided with a layer of foam so that the rib and housing portion do not directly contact the plates 17. Openings 27 are provided to allow drainage of any coupling fluid in air gap 20.